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Stainless Pricing 2026

Plans, hidden costs, and cheaper alternatives compared

Is Stainless worth the price?

85/10

Stainless offers a fair pricing structure, with a generous Free tier and a well-priced Pro tier at $25/month for unlimited usage.

The Basic tier at $10/month provides a good step up for growing teams. This pricing is best for developers and small to medium-sized businesses looking for scalable API interface solutions.

Pricing Plans

Free Trial

Free

Free

  • 1 user
  • 1 project
  • 1 GB storage
  • Basic features

Basic

$10/month

  • 5 users
  • 5 projects
  • 10 GB storage
  • Advanced features

Pro

$25/month

  • Unlimited users
  • Unlimited projects
  • 100 GB storage
  • All features
  • Priority support

Hidden Costs & Gotchas

Potential overage fees for storage beyond tier limits

No annual discount mentioned, monthly only

Priority support only on Pro tier

Which Plan Do You Need?

Individual developers starting out

Growing dev teams needing advanced features

Companies requiring unlimited API interfaces

How Stainless Compares to Competitors

Compared to Postman, which can quickly become expensive for teams with advanced features, Stainless offers a more straightforward and potentially more affordable solution, especially with its unlimited Pro tier at $25/month. While SwaggerHub has a free tier, its paid plans for teams can start higher than Stainless's Basic tier, making Stainless a competitive option for cost-conscious users.

Stainless Pricing FAQ

How much does Stainless cost?

Stainless starts at $10/month on the Basic plan. It offers 2 paid tiers ranging from $10/month up to $25/month. A free plan is also available with limited features.

Does Stainless have a free plan?

Yes. Stainless offers a free plan called "Free". It includes: 1 user, 1 project, 1 GB storage.

Does Stainless offer a free trial?

Yes, Stainless offers a free trial. No credit card is typically required to start the trial, though this may vary.

What is the cheapest Stainless paid plan?

The cheapest paid plan for Stainless is "Basic" at $10/month. Key features include: 5 users, 5 projects, 10 GB storage.

Is there a cheaper alternative to Stainless?

Yes. Popular alternatives to Stainless include Postman, Phind, ReadMe, Swagger. Free alternatives include Postman, Phind, ReadMe. Compare them side-by-side on Toolradar.

Cheaper alternatives to Stainless

Direct competitors with similar features. Many offer free tiers or lower per-seat pricing.